Medical Science News

RSS

New insights into early history of human populations before they moved out of Africa

A team of Genographic researchers and their collaborators have published the most extensive survey to date of African mitochondrial DNA (mtDNA).

24 Apr 2008

AMPK signaling helps explain how cell growth is inhibited when nutrients are low

A team of scientists at the Salk Institute for Biological Studies think they know how many-if not most-living organisms answer this question. They recently showed that when food supplies dwindle, mammals, fruitflies, or frogs probably activate the same ancient cell signaling pathway in order to conserve energy.

24 Apr 2008

Second annual Johns Hopkins NanoBio Symposium to focus on cancer

An estimated 600 experts on nanobiotechnology-a science that develops tools and machinery at the scale of one-billionth of a meter-are expected to attend the second annual Johns Hopkins NanoBio Symposium, May 1-2, 2008.

22 Apr 2008

Sperm "on the rocks" - Using semen cryopreservation to protect amphibian species

A current research project funded by the Austrian Science Fund FWF is working to optimise the cryopreservation of amphibian sperm.

21 Apr 2008

US lags Europe in highly relevant nano risk research

A new analysis by the Project on Emerging Nanotechnologies (PEN) indicates that European nations are investing nearly twice as much as the U.S. in research primarily aimed at addressing the potential risks of nanotechnology.

21 Apr 2008

Fluorine-based nanoparticles on track to improve cancer detection and therapy

Perfluorocarbons, a class of inert, oily polymers, have a proven track record in a variety of clinical uses, including in contrast-enhanced ultrasound imaging and in eye surgery to correct a detached retina.

18 Apr 2008

Nanoparticles provide detailed view inside living animals

Using nanoparticles designed specifically to produce a bright Raman spectroscopic signal, a team of investigators at the Center for Cancer Nanotechnology Excellence Focused on Therapy Response (Stanford CCNE) has shown that it can produce whole-body images in small animals that can reveal the location of tumors and track how these nanoparticles traffic through the body.

18 Apr 2008

Quantum rods light up pancreatic cancer cells

Quantum dots have shown promise as ultrabright contrast agents for use in a variety of cancer imaging studies. Now, a team of investigators at the Multifunctional Nanoparticles in Diagnosis and Therapy of Pancreatic Cancer Platform Partnership, headed by Paras Prasad, Ph.D., of the State University of New York at Buffalo, has shown that quantum rods may perform even better than their spherical cousins.

18 Apr 2008

Novel polymers inhibit nonspecific protein absorption

One problem that confounds researchers who are developing nanoparticles for use as cancer imaging and therapeutic agents is that many nanoparticles accumulate blood proteins on their surfaces as they circulate through the body.

18 Apr 2008

Protein-cross-linked polymeric materials through site-selective bioconjugation

Researchers at the University of California, Berkeley (USA) have now developed a new strategy for the formation of hybrid materials from synthetic polymers and proteins. They have thus been able to fuse the specific biological functions of proteins with the advantageous bulk and processing properties of plastics.

18 Apr 2008

Direct reprogramming of terminally differentiated mature B lymphocytes to pluripotency

Fully mature, differentiated B cells can be reprogrammed to an embryonic-stem-cell-like state, without the use of an egg according to a study published in the April 18 issue of Cell.

17 Apr 2008

Nanomagnets used to carry genes to fight tumours

A revolutionary cancer treatment using microscopic magnets to enable 'armed' human cells to target tumours has been developed by researchers funded by the Biotechnology and Biological Sciences Research Council (BBSRC).

17 Apr 2008

Wild Mediterranean plant provides potential anticancer medicines

A group of scientists from the Department of Organic Chemistry and the Biotechnology Institute of the University of Granada have found out that the plant “Dittirichia viscose”, known as elecampe, can be used to obtain inhibitors of neurogenic vasodilatation, a significant progress in migraine and cancer treatments.

17 Apr 2008